Hinge-joint for connecting rod-sections.



No.-702,204. Patented lune l0, I902.

' F. A. E. HAMILTON.

HINGE JOINT FOB CONNECTING BOD SECTIONS.

(Appliation filed May a, 1901.; (No Model.) 2 SheeisSh'eet L Witnesses Inventor M dam 'ByMAttorney'/)/ v Patenfed lune I0, I902.

No. 702,204. l

I F. A. E. HAMILJ'ON. HINGE JOINT FOR CONNECTING BUD SECTIONS.

(No Model.)

(Application filed May 3, 1901.)

2 Sheets-$heet 2 Inventor Witnesses no. WA$HINGTON. o. c

VN-ITED STATES PATENT OFFICE.

FREDERICK A. E. HAMILTON, OF BEvERLY, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE AS IGNMENTS, TO HENRY HUNT, OF BOSTON,

MASSACHUSETTS.

HINGE-JOINT FOR couusormo ROD-SECTIONS.

SPECIFICATION Application filed May 3,:19 l.

To all whom it may concern.-

4 Be it known that I, FREDERICK A.-E. Halve ILTON, of Beverly, in the county of Essex and.

State of Massachusetts, have invented a new and useful Improvement in Hinge-Jointsfo'r. Connecting Rod-Sections, of which the following, taken in connection withthe accom panying drawings, is a specification. 1.

My invention-relates to that class of joints;

to that are used for connecting rods in such a manner that the joint may be rigid initsnormal positionorby a slight manipulation become a hinge andallow the parts to fold back.

My improved hinged, joint is I especially t5 adapted for use. in connection with beds, but

may be employed forother purposes;

The objects are to so construct the joint that it may be to SOIIlBGXllBIJl] self-locking, very secure when fully locked, and ornato mental. These objects I attain by the construction shown in. the accompanying drawings, in which-'- Figure 1 is an elevation showing one of my joints as applied to a bedstead. The joint is 2 5 represented as locked. Fig. 2 shows the same as in Fig. 1, except that the joint is shown as unlocked. Fig. 3 is a plan View, the lower member being represented as turned atright angles or into a horizontal position. Fig. '4'

is an elevation showing the parts in the same relation to each other as shown in Fig. 3

looking from the direction of. the arrow 4f Fig. 5 shows in vertical section one of my joints. Fig. 6 shows in vertical Section the .3 5 outside member or locking-sleeve of my joint.

Fig. 7 is a horizontal section taken on line 7 7 of Fig. 5. Fig. 8 is a horizontal section taken on line 8 8 of Fig. 5.

In Figs. 1, 2, 3,and 401: the drawings I have illustrated my device as applied to a bedstead,

the part B representing one leg and the part B one of the connecting-bars, while the parts A and A represent upper members of the bedstead.

The construction of the joint is more clearly illustrated in Figs. 5, 6, 7, and S. The upper member A has attached to it by a pin or rivet A a connecting ball-joint hinge-piece A A A. (See Fig. 5.) This hinge-piece has a forming part of Letters Patent N 0. 702,204, dated June 10, 1902.

secure. 58,673. (No model.)

midbau 8 are s arranged lIICOHHGOlJlOn with the chambered bushing B that the part Amay be raised up, as shown in' Fig. 2, and

jthe lower member turned at right angles, as

shown in Fig. 4. This evident that the lower member may remain in its perpendicular position and the upper member be turned, if desired. The constructionwould be the same in either case. I

The sleeve S is made as shown and may be ornamented to any degree. This sleeve has on its inner side a groove G, adapted to receive antifriction-balls H. The balls H are put in (after the sleeve S is placed over the hinge-piece A A through a hole made for the purpose at S. After the balls are put in thelhole S is closed by a screwplug, as shown in.Figs. 5, 6, and 8. These balls fit loosely in the groove G and also occupy a part of the annulargroove A, formed on the hinge-piece, as indicated in Fig. 5. When the balls H are in place, they limit the up-and-down motion oflthe'fsleeve S.

Thus if the sleeve is raised up the balls in the groove G will come in contact with the shoulder A and not admit of further motion of the sleeve in that direction. on the other hand, if the sleeve is moved downward the balls will come in contactwith the shoulder A and thus prevent further motion in that direction p A screw-thread T is madeR-on the -part B and is adapted to engagewith an internal screw cut in the sleeve S. The sleeve Sfits very loosely onto the other parts, so that when I the parts are perpendicular the sleeve will fall into engagement. Thus if the parts are in the position shown in Fig. 2 the sleeve S will fall onto the upper end of the part B 13*, (which is tapered ofi, as shown at 13 and thus hold the part A upright, although not screwed down. To make the joint firm and secure, the sleeve is turned so as to screw it down, and thus bring the parts together with a true union screw-joint.

I claim- 1. In a lock hinged joint; an upper member including a hinge-piece which has a neck extending downward and terminating in a ball; a lower socket member having a bushing adapted to receive said neck and ball, said bushing having an inwardly-proj ecting flange and a lateral opening; a sleeve adapted to move freely on the upper member, and to drop onto and engage with the said lower member whereby the two members are locked together, substantially as and for the purpose set forth.

2. In a lock hinge-joint; an upper member having a hinge-piece which has a neck terminating in a ball, and also has a broad annular groove adapted to receive antifriction-balls; a lower socket member adapted to receive said neck and ball; a sleeve having an annular groove also adapted to receive said antifriction-balls; antifriction-balls adapted to work in said grooves; and screw-threads upon said sleeve and lower member adapted to engage with each other and to lock the members together, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 30th day of April, A. D. 1901.

FREDERICK A. E. HAMILTON.

Witnesses:

FRANK G. PARKER, JOHN BUOKLER. 

